Class Amphibia - Class Amphibia: Animals Move Ashore This...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Class Amphibia: Animals Move Ashore This class includes 4000 species of animals that spend their larval/juvenile stages in water, and their adult life on land.Amphibians must return to water to mate and lay eggs. Most adults have moist skin that functions in helping their small, inefficient lungs with gas exchange. Frogs, toads, newts, salamanders, and mud puppies are in this transitional group between water and land. Amphibian features not seen in bony fish include: Limbs with girdles of bone that are adapted for walking on land. A tongue that can be used for catching prey as well as sensory input. Eyelids that help keep the eyes moist. Ears adapted for detecting sound waves moving through the thin (as compared to water) medium of the air. A larynx adapted for vocalization. A larger brain than that of fish, and a more developed cerebral cortex. Skin that is thin, smooth, nonscaly, and contains numerous mucous glands; the skin plays an active role in osmotic balance and
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 3

Class Amphibia - Class Amphibia: Animals Move Ashore This...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online